I have two documents open, both flat (1-layer). Let's call them A and B, with A in the foreground. While recording an action, I bring B to the foreground and see "Select previous document" in the action pane, then select the move tool, and hold down the shift key to drag B onto A and center it. The action shows "Select next document", as it should. But the move isn't recorded. The history shows a drag took place, but it's not in the action. I've tried this by following the drag with other recordable commands, but the drag isn't recorded. Not using shift-drag doesn't make any difference, either. Aren't move tool steps recordable in an action?
Running CS6 Extended 13.0.4 on a Mac Pro, OSX 10.8.2.
Move within a document will be recorded but not Move from one doc to another.
An alternative to record may be:
target the required layer in doc B
Select All (Cmd+A)
activate doc A
Select All (Cmd+A) // to ensure paste will be centred on canvas
Many thanks, that answers the question.